Attachment for trolley poles



` l. F. HEALY.

ATTACHMENT FOR TROLLEY POLES. .APPLICATION FILED JUNE 20.1921.

1,409,376.' PawndMaf.14,1922.

y.Tartines r. HEALY, or cnirnieo,` ILLIivovis.

To (all whom it may concernf:

yBe iti-.known that l, JAMES F.V HnaLY, a

citizenof-the United States, and a resident of the 'city of Chicago, county of Cook, and State lof Illinois, have invented certain, new and useful Improvements inAttachments for Trolley Poles, of which the following is a specification. Q j f `'This invention relates to attachments for trolley poles whichare usually-'provided on electric railway c ar's for transmitting power thereto froma power cable, and has for itsobject the provision of a device which will effectively ,preventfaccidental' disengagement of a trolley pole from Ysuch powerV gable.. .i y Y,

Otherobjects will appear hereinafter.

The inventionjconfsistsin the'conibinations and arrangements-of parts hereinafter described and claimed. Y v ""g f VThe invention will be best understood by reference to tlie"'a'ccompanying "drawings forming a part of this specification, and in which, 'i

Fig. 1 is a side elevation of the invention in operative position.

Fig. 9. is a top plan View of the invention. f Y

'Fig'. 3 is a sectional view on the line 3 3, Fig. l.

Fig. 4 is a sectional view on the line 4 4, Fig. l. s V

My invention broadly consists of brackets mounted near the upper end of a trolley pole, which brackets carrya pulley adapted to resiliently engage a wire installed beside the usual power cable.

It is well known that in use trolley poles frequently Vbecome disengaged from the power cable, and especially is this likely to occur when the car is passing beneath viaducts, or travelling. at high speed over uneven road beds, andwhen so disengaged such trolley poles are damaged or destroyed by striking against the viaduct or the cable supporting arms.

I have provided a practical and eiiicient device adapted to be attachedto such trolley poles, which will effectually prevent disengagement of same from the power cable when a car is in motion, and which at the same time is so constructed that a violent and sudden pull will disengage the device thereby preventing a dislodgment of the power cable.

lApplicatien filled June 20,

- shaft o ATTACHMENT ron TROLLEY rotes.

Specification of Letters Patent. Patgyltd ll/arl'. 14C, k192,2).

1921, Serial No. 478,032.

In the drawings I' have shown a preferred embodiment of my invention, but of course modifications thereof may be made without departing from the scope .of my invention. In ordinary use a power'cable P' supplies powerft'oxelectric railway cars and is Vusually suspended from transverse supporting wires K S by suitable 'hangers such as `shown l.in lthe drawings. llnlcarrying out my invention I preferably install a cable '1,' of any suitable vstrength and thickness, adjacentY to, and-,eX-

tending parallel` with, the power wire VPi The cable l'lmay also be suspended fromthe Vwires used-to support the power cable P;

'The' trolley pole 2 is preferably'provided withspaced brackets Sand 4 ofany desir# abletypewhich are rigidly secured thereto, and may be insulated therefromin anyv suitable manner. -In theends of -brackets 3 and'VV l is journaled-aI-shaflt 5, the outer endof which may-be bent Vas ,shown at-ito provide a'bearing for'apulleyf? which is "rotatably mounted thereon.v rlhe axis of the pulley 7 is preferably in the same plane as the axis y ofthe trolley pole, but such pulley may be mounted in different positions if desired. The pulley 7 preferably has a deep peripheral Groove 8 which is adapted to positively engage the cable l at all times.V

Disposed about the shaft 5 is a spring 9, one end of which is attached to the bracket 3,' and the other end of which vis secured to the shaft 5,7the spring 9 normally'te'nding to rotate the shaft 5 and pulley 7 in a clockwise direction so as to resiliently engage the pulley 7 with the cable l. Rotation of the islimited by a stop 10.

lf desired the brackets 3 and may be of such type as to support the shaft 5 at an angle to the trolley pole to permit of more effective operation of the device.

ln operation the pulley mounted on the upper' end of the Vtrolley'pole is normally held in operative position by the tension ofv the spring 5. When the pulley'engages the -cable l. it is retained in such enga-gement by tion and may be` cheaply manufactured.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited'to the precise details of the construction set forth, but desire to avail myself of such Variations and modifications as come within the scope of the appended claims.

yHaving described my invention, what I claim as new and desire to secure by Let ters Patent; is n y1. In an attachment for trolley poles normally engaging a conductor, comprising a guide mounted adjacent said conductor and extending parallel therewith; and means engaging between said conductor and said guide to resiliently press said trolley lpole against said conductor.

2. In an attachment for trolley poles normally engaging a conductor, comprising a guide mounted adjacent said conductor and extending parallel therewith; and means rotatably mounted and detachab-ly engaging between said conductor and lsaid guide to resiliently press said trolley pole against said conductor. A

l3. In an attachment for trolley poles normally engaging a conductor, comprising an auxiliary non-conducting cable mounted adjacent and below said conductor and eX- tending parallel therewith; and means r0- tatably mounted and detachably engaging between said conductor and said cable to resiliently press said trolley pole against said conductor.

4. In an attachment for trolley poles normally engaging a conductor, comprising an auxiliary non-conducting cable mounted adjacent and below said conductor and extending parallel therewith; brackets on said trolley pole; a shaft journalled in said brackets and having one end turned outwardly; and a pulley mounted on one end of said shaft and adapted to detachably engage said auxiliary cable and resiliently lpress said trolley pole against said conductor.

5. In an attachment for trolley poles comprising spaced brackets mounted thereon; a shaft journaled insaid brackets and having one end turned outwardly; a spring on said shaft; a stop on said shaft; apulley rotatably mounted on said shaft; and a cable mounted beneath said pulley and resiliently and detachably engaged thereby, to Vretain said trolley pole in operative'position.

In testimony whereof I have signed my I name to this specification in the presenceof two subscribing witnesses.

JAMES F. HEALY- Witnesses:

JOSHUA R. H. Po'r'rs, FREDA C.y APPLETON. 

